Game Mode Idea - Champion Rotation

What i was thinking is in this game mode every few minutes you take over a different champion from the team lets say the team is. Twitch, Soraka, Katarina, Jax, and Nunu. You start by playing with katarina, after 5 minutes or so you move to Jax, Jax to Nunu, Nunu to Twitch, Twitch to Soraka, Soraka to Katarina xD I think it would be pretty interesting to play, people will get the chance to play champions they dont own and maybe help one another with the builds and what not. I can tell this mode can be pretty troll because someone could make stupid builds but they will be ruining the game not just for the next person to play the champ but for the whole team, cause everyone is gonna be playing that champ in some point of the game.